py27 mock is 3.0.5

try setting coverage back to 4.5.4

Author: wsanchez

tox.ini

@@ -61,7 +61,7 @@ deps =
     # For hypothesis. Note Python 3.4 isn't supported by hypothesis.
     py27: hypothesis==4.43.9
     {py35,py36,py37,py38,py39,py2,py3}: hypothesis==5.8.6
-    py27: mock==4.0.2
+    py27: mock==3.0.5
 
 setenv =
     {[default]setenv}
@@ -246,7 +246,7 @@ basepython = {[default]basepython}
 skip_install = True
 
 deps =
-    coverage==5.1
+    coverage==4.5.4  # rq.filter: <5  # coverage 5.0 drops Python 3.4 support
 
 setenv =
     {[default]setenv}